The laissez-faire leadership style is characterized by allowing the team to make their own decisions and work independently. This style is suitable for teams that are mature, competent, and motivated, which seems to be the case with the project manager's team, as they have previously worked together on construction projects.
The laissez-faire approach trusts the team's abilities and encourages autonomy and self-organization, which can lead to increased innovation and creativity.
: The information is based on the leadership styles described in the Project Management Professional (PMP) and Professional in Business Analysis (PMI-PBA) reference materials, which outline various leadership styles and their applications in project management contexts1234.

This is the best option because it allows the project manager to address the current and future needs of the project, while also developing the skills and knowledge of the team. According to Project Management Best Practices for 2024 + Expert Tips, one of the best practices is to "provide your team members with opportunities to learn new skills and grow professionally". This can increase their motivation, engagement, and productivity, as well as reduce turnover and improve quality.
Option A is not the best option because it may create conflicts or dependencies with another team, and it does not solve the long-term need for an SME in the specific area.
Option C is not the best option because it may incur additional costs and risks, and it does not foster the development of the team.
Option D is not the best option because it does not address the issue at all, and it may delay the project progress and quality.

Allowing the resources to periodically choose on which team they would like to work is a technique that fosters self-organization and empowerment among the team members. It also helps to create cross-functional teams that can deliver value faster and more effectively. Self-organization is one of the key principles of agile project management, as it enables the team to adapt to changing requirements and customer needs. The project manager should not prevent the resources from choosing teams, as this would undermine their autonomy and motivation. The project manager should also not assume that the resources will always choose their favorite team, as this may not be the case. The project manager should not indicate that the team members have already been assigned to a team through workforce optimization, as this would imply that the team composition is fixed and cannot be changed. References: Project Management Professional Sample Questions, page 12, question 100. [A Guide to the Project Management Body of Knowledge (PMBOK Guide)], Sixth Edition, page 52, section 2.3.2. [Agile Practice Guide], page 14, section 2.1.2.

According to the PMBOK Guide, the schedule performance index (SPI) and the cost performance index (CPI) are two key indicators of the project performance measurement1. The SPI measures how efficiently the project team is using the time allocated for the project, while the CPI measures how efficiently the project team is using the resources allocated for the project1. An SPI or CPI value greater than 1 indicates that the project is ahead of schedule or under budget, respectively. An SPI or CPI value less than 1 indicates that the project is behind schedule or over budget, respectively1. In this question, the project manager notices that the SPI is 1.8 and the CPI is 0.1, which means that the project is ahead of schedule but over budget. This is a serious issue that needs to be addressed as soon as possible, as it may jeopardize the project viability and stakeholder satisfaction. The project manager should not ignore the project sponsor's concern, as the project sponsor is the person who provides the financial resources and support for the project2. The project manager should also not assume that it is normal to spend more money in the design phase of a project, as this may indicate poor planning, estimation, or control of the project costs3. The project manager should not stop crashing the schedule, as this may affect the project scope, quality, or risk. The project manager should not use a resource-levelling technique, as this may delay the project completion and increase the project costs.
The best option for the project manager is to manage the project sponsor closely and revise the project's resource management plan to improve indicators. This means that the project manager should communicate frequently and transparently with the project sponsor, explain the reasons for the cost overrun, and seek their input and approval for any corrective actions. The project manager should also review and update the project' s resource management plan, which is the document that describes how the project resources will be estimated, acquired, managed, and controlled. The project manager should identify and implement strategies to reduce the project costs, such as optimizing the resource allocation, negotiating better rates, or eliminating unnecessary activities or resources. By managing the project sponsor closely and revising the project's resource management plan, the project manager can improve the project performance indicators and increase the chances of delivering the project within the approved budget. References:
1: PMBOK Guide, Chapter 7, Section 7.4.2.1, Page 267
2: PMBOK Guide, Chapter 13, Section 13.1.2.1, Page 518
3: 5 Essential Tips for Schedule Control in Project Management
PMBOK Guide, Chapter 6, Section 6.6.2.5, Page 215
PMBOK Guide, Chapter 6, Section 6.4.2.5, Page 201
Guide to Project Budgeting & Scheduling
PMBOK Guide, Chapter 9, Section 9.1.3.1, Page 313
How to Make a Project Budget: Project Budgeting Basics

This question is best classified in the People domain because it deals with stakeholder engagement, communication, and conflict management. PMI's PMP Examination Content Outline says the project manager should analyze communication needs of all stakeholders, determine appropriate communication methods, and confirm that communication is understood and feedback is received. When team members report that an important stakeholder is difficult to work with, the first PMP-aligned response is to evaluate the situation carefully and identify communication alternatives that may improve the interaction.
Option B moves too quickly into a written complaint without first diagnosing the communication problem.
Option C is too confrontational and escalates prematurely. Option D also escalates too early, before the project manager has tried to resolve the issue at the lowest appropriate level. PMI guidance on stakeholder management and communication emphasizes understanding motivations, listening, and choosing communication strategies suited to the situation. Therefore, the best first action is to assess the problem and adjust the communication approach, which reflects professional judgment, active listening, and constructive stakeholder engagement.